Oar-lock



(No Mdel.)

T. MARSHALL.

UAR LOCK.

. Patented 1118.1. 11, 1884.

UNTTED STATES PATENT @Finca THOMAS MARSHALL, ,OF BIPON, VISCONSIN.

OAR-LOCK.-

SPECIFICATION forming part of Letters Patent No. 294,893, dated March11, 1884.

Application filed December 26, IEB. (No model.)

To LV/ZZ whom, it may concern.- Beit known that I, THOMAS MARsHALL, ofRipon, in thepcounty of Fond du Lac, and in the State of Wisconsin, haveinvented certain new and useful Improvements in Oar-Locks; and I dohereby declare that the following is a full, clear, and exactdescription thereof'.

My invention relates to improvements in rowlocks, and will be fullydescribed hereinafter.

In the drawings, Figure 1 is a broken side view of an oar fitting intomy improved rowlock. Fig.'2 is a vertical section of my rowlock on linex x of Fig, 3, which is a faceview of the same.

A is the ordinary yoke, each end of which has a hole for the screws a,that form the bearing-.trunnionsof Vthe swiveling ring B, which isprovided at these points with the shoulders a', and in the center ofthese shoulders are formed threaded holes for said screws a. Theswiveling ring B is made in two equal segments, each of which has anear, b, formed on its upper and lower ends and projecting` from itat'right angles to its axis. In these ears b threaded holes are formedto receive the binding-screws d d, which are likewise passed through theelastic cushion c, set between the opposing faces of the ears b. On theinner rim of the swiveling-ring segments is a flange,e, which forms acircular bearing for the oar-ring C. This ring is also made in twohalves, between the opposing ends of which air-spaces are leftcorresponding to the amount of compression the elastic cushion@ iscapable of. In the outer rim of the oar-ring C a groove, f, is formed,which loosely ts over theybearingflange e of the swiveling ring B, andeach half of said ring C has an ear, g, which projects at right angleson each side of it, and these ears g are perforated to receive thescrews t z, whereby the oar is held firmly in its place in the rowlock.'

It will be understood from the above description that in my improvedrowloclr I have provided means whereby, without at all interfering withthe free feathering of the oar, this last may be fastened at variouspoints of its tapering handle, and oars of different sizes may be usedon the saine rowloclz. adaptability of my rowlocl: is limited, ofcourse, by the size of the yoke and the thickness ofthe ,elastic cushioninserted between the segments of the swiveling lring and thecorresponding air-spaces left between the halves `of the oar-ring.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. Arowlocl; having a swiveling ring made in two parts, and providedwith ears, between which are tted elastic cushions, in combination withan oar ring made in two parts, whereby the two segments of the latterare adapted to bear freely inside the former, and to be fastened atvarious points of the oar, as desired, substantially as set forth.

2. A rowlock having an oarring made in two parts, fitting loosely withina swiveling ring, the latter also made in two suitably-connected parts,between the points of contact of which are fitted elastic cushions,whereby the two separate segments of the oar-ring are adapted to befastened at points of different diameters of an oar, or to oars ofvarious sizes, substantially as set forth.

3. In a rowlock, the swiveling ring B,made in two parts, each having ashoulder, a,.and the ears b, in combination with the .elastic cushionsc, and the oar-ring C, made in two halves, substantially as shown anddescribed, and for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set-my hand, atMilwaukee, in the countyof Milwaukee and State of XVis cousin, Vin thepresence of two witnesses.

THOMAS MARSHALL.

W'itnesses:

STANLEY S. SToUr, H. G. Unnnnwoon.

This b

